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NORTON SHORES, Mich. (WZZM) -- Police conducted a ground search for Jessica Heeringa Thursday evening at P.J. Hoffmaster State Park.

During the search, a park visitor found wire rimmed glasses that resembled Herringa's. However, a family member tells WZZM 13 she does not believe the glasses are Jessica's.

A Michigan State Police helicopter and policedogs are assisting in the search for Heeringa.